rustc_typeck: correctly compute Substs for Res::SelfCtor.

src/test/ui/issues/issue-57924.rs

@@ -3,6 +3,7 @@ pub struct Gcm<E>(E);
 impl<E> Gcm<E> {
     pub fn crash(e: E) -> Self {
         Self::<E>(e)
+        //~^ ERROR type arguments are not allowed for this type
     }
 }
 

src/test/ui/issues/issue-57924.stderr

@@ -0,0 +1,9 @@
+error[E0109]: type arguments are not allowed for this type
+  --> $DIR/issue-57924.rs:5:16
+   |
+LL |         Self::<E>(e)
+   |                ^ type argument not allowed
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0109`.

src/test/ui/issues/issue-61882-2.rs

@@ -0,0 +1,11 @@
+struct A<T>(T);
+
+impl A<&'static u8> {
+    fn f() {
+        let x = 0;
+        Self(&x);
+        //~^ ERROR `x` does not live long enough
+    }
+}
+
+fn main() {}

src/test/ui/issues/issue-61882-2.stderr

@@ -0,0 +1,15 @@
+error[E0597]: `x` does not live long enough
+  --> $DIR/issue-61882-2.rs:6:14
+   |
+LL |         Self(&x);
+   |              ^^
+   |              |
+   |              borrowed value does not live long enough
+   |              requires that `x` is borrowed for `'static`
+LL |
+LL |     }
+   |     - `x` dropped here while still borrowed
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0597`.

src/test/ui/issues/issue-61882.rs

@@ -0,0 +1,9 @@
+struct A<T>(T);
+
+impl A<bool> {
+    const B: A<u8> = Self(0);
+    //~^ ERROR mismatched types
+    //~| ERROR mismatched types
+}
+
+fn main() {}

src/test/ui/issues/issue-61882.stderr

@@ -0,0 +1,21 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-61882.rs:4:27
+   |
+LL |     const B: A<u8> = Self(0);
+   |                           ^ expected bool, found integer
+   |
+   = note: expected type `bool`
+              found type `{integer}`
+
+error[E0308]: mismatched types
+  --> $DIR/issue-61882.rs:4:22
+   |
+LL |     const B: A<u8> = Self(0);
+   |                      ^^^^^^^ expected u8, found bool
+   |
+   = note: expected type `A<u8>`
+              found type `A<bool>`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.